From 64d590a24f7a570fd8d25d05edd4f433e32900a8 Mon Sep 17 00:00:00 2001 From: Nathan Chancellor Date: Wed, 7 Feb 2024 17:14:58 -0700 Subject: [PATCH] s390/boot: vmlinux.lds.S: handle '.rela' sections When building with CONFIG_LD_ORPHAN_WARN after selecting CONFIG_ARCH_HAS_LD_ORPHAN_WARN, there are several warnings from arch/s390/boot/head.o due to the unhandled presence of '.rela' sections: s390-linux-ld: warning: orphan section `.rela.iplt' from `arch/s390/boot/head.o' being placed in section `.rela.dyn' s390-linux-ld: warning: orphan section `.rela.head.text' from `arch/s390/boot/head.o' being placed in section `.rela.dyn' s390-linux-ld: warning: orphan section `.rela.got' from `arch/s390/boot/head.o' being placed in section `.rela.dyn' s390-linux-ld: warning: orphan section `.rela.data' from `arch/s390/boot/head.o' being placed in section `.rela.dyn' s390-linux-ld: warning: orphan section `.rela.data.rel.ro' from `arch/s390/boot/head.o' being placed in section `.rela.dyn' s390-linux-ld: warning: orphan section `.rela.iplt' from `arch/s390/boot/head.o' being placed in section `.rela.dyn' s390-linux-ld: warning: orphan section `.rela.head.text' from `arch/s390/boot/head.o' being placed in section `.rela.dyn' s390-linux-ld: warning: orphan section `.rela.got' from `arch/s390/boot/head.o' being placed in section `.rela.dyn' s390-linux-ld: warning: orphan section `.rela.data' from `arch/s390/boot/head.o' being placed in section `.rela.dyn' s390-linux-ld: warning: orphan section `.rela.data.rel.ro' from `arch/s390/boot/head.o' being placed in section `.rela.dyn' These sections are unneeded for the decompressor and they are not emitted in the binary currently. In a manner similar to other architectures, coalesce the sections into '.rela.dyn' and ensure it is zero sized, which is a safe/tested approach versus full discard. Signed-off-by: Nathan Chancellor Tested-by: Justin Stitt Link: https://lore.kernel.org/r/20240207-s390-lld-and-orphan-warn-v1-6-8a665b3346ab@kernel.org Signed-off-by: Heiko Carstens --- arch/s390/boot/vmlinux.lds.S | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/s390/boot/vmlinux.lds.S b/arch/s390/boot/vmlinux.lds.S index 5692a72e9cd6..ba6520a9541b 100644 --- a/arch/s390/boot/vmlinux.lds.S +++ b/arch/s390/boot/vmlinux.lds.S @@ -134,6 +134,10 @@ SECTIONS *(.plt) *(.plt.*) *(.iplt) *(.igot .igot.plt) } ASSERT(SIZEOF(.plt) == 0, "Unexpected run-time procedure linkages detected!") + .rela.dyn : { + *(.rela.*) *(.rela_*) + } + ASSERT(SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations (.rela) detected!") /* Sections to be discarded */ /DISCARD/ : { -- 2.20.1